/**
* @param $args
* GET: /misc/captcha
*/
public function captcha($args)
{
$letters = 'qwertyuiopasdfghjklzxcvbnm1234567890';
$captchaLen = 6;
$width = 120;
$height = 30;
$font = $_SERVER['DOCUMENT_ROOT'] . Config::$SUB_FOLDER . "/content/fonts/consolas.ttf";
$fontSize = 16;
header('Content-type: image/png');
$image = imagecreatetruecolor($width, $height);
imagesavealpha($image, true);
$bg = imagecolorallocate($image, 190, 190, 190);
imagefill($image, 0, 0, $bg);
$captcha = '';
for ($i = 0; $i < $captchaLen; $i++) {
$captcha .= $letters[rand(0, strlen($letters) - 1)];
$x = ($width - 20) / $captchaLen * $i + 10;
$x = rand($x, $x + 4);
$y = $height - ($height - $fontSize) / 2;
$curColor = imagecolorallocate($image, 255, 255, 255);
//rand(0, 100), rand(0, 100), rand(0, 100));
$angle = rand(-25, 25);
imagettftext($image, $fontSize, $angle, $x, $y, $curColor, $font, $captcha[$i]);
}
Captcha::setCaptcha($args[0], $captcha);
imagepng($image);
imagedestroy($image);
}
